# $Id: README,v 1.47 2020/12/25 21:47:43 chw Exp chw $

ruby-odbc-0.999991

This is an ODBC binding for Ruby. So far it has been tested with

    - Ruby 1.[6-9], MySQL 3.22/MyODBC (local), unixODBC 2.1.0
      on Linux 2.2-x86 and 2.6-x86_64

    - Ruby 1.6.4, MySQL 3.22/MyODBC (local), libiodbc 2.50
      on Linux 2.2-x86

    - Ruby 1.[6-8], MySQL 3.22/MyODBC (remote), MS Jet Engine, MSVC++ 6.0
      on Windows NT4SP6

    - Ruby 1.6.[3-5], MySQL 3.22/MyODBC (remote), MS Jet Engine, cygwin,
      on Windows NT4SP6 and 2000

    - Ruby 1.8.*, SQLite/ODBC >= 0.67, libiodbc 3.52.4 on Fedora Core 3 x86

    - Ruby 2.0.0, SQLite/ODBC >= 0.93, unixODBC 2.2.14 on Ubuntu 12.04 x86

    - Ruby >= 2.4

    Michael Neumann <neumann @nospam@ s-direktnet.de> and
    Will Merrell <wmerrell @nospam@ catalystcorp.com> reported successful
    compilation with Cygwin on Win32.

Requirements:

    - Ruby 1.6.[3-8] or Ruby >= 1.7
    - unixODBC 2.x or libiodbc 3.52 on UN*X 

Installation:

    $ ruby -Cext extconf.rb [--enable-dlopen|--disable-dlopen]
    $ make -C ext
    # make -C ext install

    --enable/disble-dlopen turns on/off special initialization
    code to make ruby-odbc agnostic to unixODBC/iODBC driver
    manager shared library names when GCC is used for compile.
    In cases where unixODBC or iODBC is installed in non-standard
    locations, use the option --with-odbc-dir=<non-standard-location>
    when running extconf.rb

Installation of utf8 version:

    $ ruby -Cext/utf8 extconf.rb [--enable-dlopen|--disable-dlopen]
    $ make -C ext/utf8
    # make -C ext/utf8 install

Installation MSVC:

    C:..>ruby -Cext extconf.rb
    C:..>cd ext
    C:..>nmake
    C:..>nmake install
    C:..>ruby -Cutf8 extconf.rb
    C:..>cd utf8
    C:..>nmake
    C:..>nmake install

Testing:

    $ ruby -Ctest test.rb DSN [uid] [pwd]
 or
    $ ruby -KU -Ctest/utf8 test.rb DSN [uid] [pwd]

Usage:

    Refer to doc/odbc.html

    The difference between utf8 and non-utf8 versions are:

      - non-utf8 version uses normal SQL.* ANSI functions
      - utf8 version uses SQL.*W UNICODE functions and
        requires/returns all strings in UTF8 format

    Thus, depending on the -K option of ruby one could use
    that code snippet:

      ...
      if $KCODE == "UTF8" then
        require 'odbc_utf8'
      else
        require 'odbc'
      fi

    It is also possible to load both non-utf8 and utf8 version
    into ruby:

      ...
      # non-utf8 version
      require 'odbc'
      # utf8 version
      require 'odbc_utf8'

    Whichever is loaded first, gets the module name 'ODBC'.
    The second loaded module will be named 'ODBC_UTF8' (for
    'odbc_utf8') or 'ODBC_NONE' (for 'odbc'). That should
    allow to use both versions simultaneously in special
    situations.

TODO:

    - heavier testing
    - improve documentation

Author:

    Christian Werner
    mailto:chw @nospam@ ch-werner.de
    http://www.ch-werner.de/rubyodbc